Cell Structure

2.5.1 Cell Structure

Vocabulary: cell wall, centriole, chloroplast, cytoplasm, endoplasmic reticulum, Golgi apparatus, lysosome, mitochondria, nuclear envelope, nucleolus, nucleus, organelle, plasma membrane, plastid, ribosome, vacuole, vesicle

Prior Knowledge Questions (Do these BEFORE using the Gizmo.)

1. What are some of the structures inside a cell that help it to live and perform its role in an organism? The mitochondria makes ATP, the nucleus contains DNA, and ribosomes synthesize proteins.

2. How do you think plant cells differ from animal cells? (Hint: What can plants do that animals cannot?) plant cells use photosynthesis to covert sunlight into needed food. Plants also have chloroplasts and animal cells do not.

Gizmo Warm-up

The Cell Structure Gizmo™ allows you to look at typical animal and plant cells under a microscope. To start, click Sample to take a sample of an animal cell. Use the Zoom slider to see the cell at a magnification of 1000x (1000 times larger than normal).

1. Use the up/down and left/right sliders to manipulate the cell. Find the red arrow pointing to the centrioles. From the internet, find a new picture of a centriole and paste it here. Please include the web address you got it from.

[pic]

http://micro.magnet.fsu.edu/cells/centrioles/centrioles.html

2. Read the description of the centrioles. What is their function? Help organize the movement of chromosomes during cell division.

|Activity A: |Get the Gizmo ready: |[pic] |

| |Check that an Animal cell is mounted on the microscope. | |

|Animal cells |Set the Zoom to 500x. | |

Question: Organelles are specialized structures that perform various functions in the cell....